Brief Introduction of Qualitative research Method

1. Qualitative Research
ASAD OMAR

2. Introduction to Qualitative
Research

3. What is Qualitative Research
Qualitative research is a type of scientific research. In general terms,
scientific research consists of an investigation that:
• seeks answers to a question
• systematically uses a predefined set of
procedures to answer the question
• collects evidence
• produces findings that were not
determined in advance
• produces findings that are applicable
beyond the immediate boundaries of the
study

4. Why use Qualitative Research?
“Quantitative methods provided either no
answers or the wrong answers to important
questions in both clinical care and service
delivery”
“Qualitative methods reach the parts of a
subject matter that other methods cannot
reach”
How to read a paper. BMJ, 2006 (3rd edition)

5. Characteristics of Qualitative Research
1. Takes place in the natural setting
2. Uses multiple methods that are interpretive
3. Is emergent rather than tightly prefigured
4. Fundamentally interpretive (role of researcher as interpreter)
5. Researcher views social phenomena holistically
6. Researcher uses complex reasoning that is multifaceted, iterative, and
simultaneous
7. Researcher adopts and uses one or more strategies of inquiry

6. Fundamentals of qualitative research:
Meaning, not numbers
Capturing some aspect of
social or psychological life
Putting an organizing
framework on the messiness
of real life
(Braun & Clarke, 2013)

7. QUALITATIVE
APPROACH: Inductive
GOAL: Depth, local meanings, generate
hypotheses
SETTING: Natural
SAMPLING: Purposeful
DATA: Words, images; narrow but rich
DATA ANALYSIS: Iterative interpretation
VALUES: Personal involvement and
partiality (subjectivity, reflexivity)
QUANTITATIVE
APPROACH: Deductive
GOAL: Breadth, generalization, test
hypotheses
SETTING: Experimental/Quasi-
SAMPLING: Probabilistic
DATA: Numbers; shallow but broad
DATA ANALYSIS: Statistical tests, models
VALUES: Detachment and impartiality
(objectivity)
MIXED
Fundamentals of qualitative research:
Meaning, not numbers

8. Qualitative Research Methods

9. Different methodologies
No ‘gold standard’ or hierarchy –
◦ researcher selects most suitable method(s) to research question
Grounded theory- most commonly used
◦ themes generated purely from data observation – ‘emergence’
◦ ‘inductive’ process
◦ data collection and analysis simultaneous

10. Qualitative Research Methods
The three most common qualitative methods, explained in detail in
their respective modules, are:
1. Participant observation
2. In-depth interviews
3. Focus groups
Each method is particularly suited for obtaining a specific type of
data.

11. Participant observation
Participant observation is appropriate for collecting data on
naturally occurring behaviors in their usual contexts.
• Best for behavioural
questions
• Impact of observer;
Covert methods

12. In-depth interviews
In-depth interviews are optimal for collecting data on individuals’ personal
histories, perspectives, and experiences, particularly when sensitive topics
are being explored.
Structured
limited response choices, large
numbers in short time, ease of
analysis
Semi-structured
overall structure - major questions
and more open questions, more
individualised, detailed and accurate

13. Focus groups
Focus groups are effective in eliciting data on the cultural norms of a
group and in generating broad overviews of issues of concern to the
cultural groups or subgroups represented.
• 6-10 people; discuss commonly
shared issue;
• facilitated; non-directive questioning,
observation; wide breadth of opinion;
• BUT issues of group dynamics, depth
and validity

14. Comparing Quantitative and
Qualitative Research

15. Basic differences between Quantitative and
Qualitative Research methods
Quantitative and qualitative research methods differ primarily in:
Their analytical objectives
The types of questions they pose
The types of data collection instruments they use
The forms of data they produce
The degree of flexibility built into study design

16. Quantitative Qualitative
General framework
• Seek to confirm hypotheses about
phenomena
• Instruments use more rigid style of
eliciting an categorizing responses to
questions
• Use highly structured methods such
as questionnaires, surveys, and
structured observation
• Seek to explore phenomena
• Instruments use more flexible,
iterative style of eliciting and
categorizing responses to questions
• Use semi-structured methods such as
in-depth interviews, focus groups,
and participant observation
Analytical objectives
• To quantify variation
• To predict causal relationships
• To describe characteristics of a
population
• To describe variation
• To describe and explain relationships
• To describe individual experiences
• To describe group norms
Question format • Closed-ended • Open-ended

17. Quantitative Qualitative
Data format
• Numerical (obtained by assigning
numerical values to responses)
• Textual (obtained from audiotapes,
videotapes, and field notes)
Flexibility in study design
• Study design is stable from
beginning to end
• Participant responses do not
influence or determine how and
which questions researchers ask
next
• Study design is subject to statistical
assumptions and conditions
• Some aspects of the study are
flexible (for example, the addition,
exclusion, or wording of particular
interview questions)
• Participant responses affect how
and which questions researchers
ask next
• Study design is iterative, that is,
data collection and research
questions are adjusted according
to what is learned

18. Qualitative and Quantitative Approaches
Qualitative Quantitative
(Usually) Non-probability based sample Typically a probability-based sample
Non-generalizable Generalizable
Answers Why? How? Answers How many? When? Where?
Formative, earlier phases Tests hypotheses, latter phases
Data are “rich” and time-consuming to
analyze
Data are more efficient, but may miss
contextual detail
Design may emerge as study unfolds Design decided in advance
Researcher IS the instrument Various tools, instruments employed

19. Sampling in Qualitative
Research

20. 1. Purposive sampling
2. Quota sampling
3. Snowball sampling
The three of the most common sampling methods used in
qualitative research are:

21. purposive sampling
Purposive sampling, one of the most common sampling strategies, select
participants according to preselected criteria relevant to a particular
research question (for example, HIV-positive women in Capital City).
Sample sizes depend on the resources and time available, as well as the
study’s objectives.
Purposive sample sizes are often determined on the basis of theoretical
saturation (the point in data collection when new data no longer bring
additional insights to the research questions).
Purposive sampling is therefore most successful when data review and
analysis are done in conjunction with data collection.

22. Quota Sampling
Quota sampling, sometimes considered a type of purposive sampling, is also common. In
quota sampling, we decide while designing the study how many people with which
characteristics to include as participants.
Characteristics might include age, place of residence, gender, class, profession, marital
status, use of a particular contraceptive method, HIV status, etc.
The criteria we choose allow us to focus on people we think would be most likely to
experience, know about, or have insights into the research topic.
Then we go into the community and – using recruitment strategies appropriate to the
location, culture, and study population – find people who fit these criteria, until we meet
the prescribed quotas.

23. Snowball Sampling
A third type of sampling, snowballing – also known as chain referral
sampling – is considered a type of purposive sampling.
In this method, participants or informants with whom contact has already
been made use their social networks to refer the researcher to other
people who could potentially participate in or contribute to the study.
Snowball sampling is often used to find and recruit “hidden populations,”
that is, groups not easily accessible to researchers through other sampling
strategies.

24. Recruitment in Qualitative
Research

25. How are recruitment strategies decided?
Ideally, the local principal investigator and qualitative research team
members work together, in close consultation with community leaders
to develop a plan to identify and recruit potential participants for each
site.
Recruitment strategies are determined by the type and number of data
collection activities in the study and by the characteristics of the study
population.
They are typically flexible and can be modified if new topics, research
questions, or subpopulations emerge as important to the study, or if
initial strategies do not result in the desired number of recruits.

26. What should we say to people when we try to
recruit them?
Each research team develops guidelines for the introductory comments staff
make to potential participants at each site. These guidelines need to be sensitive
to the social and cultural contexts from which participants will be recruited.
They should also reflect the researchers’ awareness that willingness to
participate in an interview or focus group will depend on:
How well the participants understand what the study is about.
What will be expected of them if they participate
How their privacy will be respected.

27. Consent of Participation
Typically, formal informed consent is necessary for all qualitative
research methods, regardless of the sampling method used to
identify potential participants and the strategies used to recruit
them.
Whether this informed consent is oral or written depends on a
number of project-specific factors and ultimately upon approval by
the ethics committee.
During recruitment, obtaining informed consent for qualitative
research involves clearly explaining the project to potential study
participants.

28. Written & Oral Consent
Written consent means that a person receives a written form that describes the
research and then signs that form to document his or her consent to participate.
For illiterate participants, the form is read to them, they make some kind of mark
in place of a signature, and then a witness usually signs as testimony that the
consent is authentic.
Oral consent means that a person receives all of the information needed for
consent either verbally or in writing and then verbally consents to participate.
The participant does not sign a consent form; therefore, this is often described as
waiving the requirement for documentation of informed consent. This does not
mean that the requirement for informed consent is waived.

29. Ethical Guidelines in Qualitative
Research

30. Fundamental Research Ethics Principles
There are three core principles
Respect for persons requires a commitment to ensuring the autonomy of
research participants. The dignity of all research participants must be respected.
Adherence to this principle ensures that people will not be used simply as a
means to achieve research objectives.
Beneficence requires a commitment to minimizing the risks associated with
research, including psychological and social risks, and maximizing the benefits
that accrue to research participants.
Justice requires a commitment to ensuring a fair distribution of the risks and
benefits resulting from research. Those who take on the burdens of research
participation should share in the benefits of the knowledge gained.

31. Confidentiality
Because qualitative research is conversational, it is important for data
collectors to maintain clear boundaries between what they are told
by participants and what they tell to participants.
The ways in which confidentiality might be breached should be
carefully considered before data collection begins and explicit
strategies be put in place for protection.

32. References
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